Tootfinder

from my link log —
libcpu: a library to emulate several CPU architectures using LLVM.
https://github.com/libcpu/libcpu
saved 2020-04-14 https://dotat.a…

GitHub - libcpu/libcpu: "libcpu" is an open source library that emulates several CPU architectures
"libcpu" is an open source library that emulates several CPU architectures - libcpu/libcpu

A profile of Song-Chun Zhu, an AI scientist and NSF and Pentagon grantee, who left the US after 28 years to lead China's state-backed AI institute BIGAI in 2020 (Chang Che/The Guardian)
https://www.theguardian.com/news/n…

Meta’s 2020 research project, Project Mercury,
measured the effect of ‘deactivating’ Facebook & Instagram
According to Meta docs obtained via discovery…
’people who stopped using Facebook for a week reported lower feelings of depression, anxiety, loneliness & social comparison’
https://

Die letzte Kommunalwahl in NRW war 2020, damals stand das Thema Klima ganz oben auf der Agenda. Jetzt geht es um Wirtschaft, Sicherheit, Migration. Klimaschutz ist kaum ein Thema mehr. Und das in einem der Bundesländer der Flutkatastrophe im Ahrtal 2021. Ob der Klimawandel weiß, dass er sich jetzt mal zurückhalten soll, weil er kein Trendthema mehr ist?
#KommunalwahlNRW

Sex trafficking on Meta platforms was both difficult to report and widely tolerated.
Instagram’s former head of safety testified that when she joined Meta in 2020 she was shocked to learn the company had
a “17x” strike policy
for accounts that engaged in the “trafficking of humans for sex.”
https://

Court Filings Allege Meta Downplayed Risks to Children and Misled the Public
Newly unsealed court filings allege Meta tolerated sex trafficking, hid harms to teens, and prioritized growth over user safety for years.

There’s a line in the Times piece about Dominic Cummings claiming that the Cabinet Office secure systems had been breached by China circa 2020:
“He said he was warned at the time that disclosing some specific details of the breach would be a criminal offence.“
And I presume this is Official Secrets Act, but no article mentions this?

In 2020, Twitter had become utterly intolerable because of the Woke Left. Now it is utterly intolerable because of the Woke Right. It's a ruin.

Comment on "A Note on Over-Smoothing for Graph Neural Networks"
Razi Hasson, Reuven Guetta
https://arxiv.org/abs/2509.04178 https://arxiv.org/pdf…

Comment on "A Note on Over-Smoothing for Graph Neural Networks"
We comment on Cai and Wang (2020, arXiv:2006.13318), who analyze over-smoothing in GNNs via Dirichlet energy. We show that under mild spectral conditions (including with Leaky-ReLU), the Dirichlet energy of node embeddings decreases exponentially with depth; we further extend the result to spectral polynomial filters and provide a short proof for the Leaky-ReLU case. Experiments on edge deletion and weight amplification illustrate when Dirichlet energy increases, hinting at practical ways to re…

Spectral gap for the signed interchange process with arbitrary sets
Gil Alon, Subhajit Ghosh
https://arxiv.org/abs/2510.04244 https://arxiv.org/pdf/2510.04…

Spectral gap for the signed interchange process with arbitrary sets
In 2020, F.Cesi introduced a random walk on the hyperoctahedral group $B_n$ and analysed its spectral gap when the allowed generators are transpositions and diagonal elements corresponding to singletons. In this paper we extend the allowed generators to transpositions and any diagonal elements, and characterise completely the set of representations from which the spectral gap arises. This settles a conjecture posed in Cesi's paper.

#Drumpf political pressures see #WestPoint reneg on honoring #TomHanks as “outstanding citizen" as well as kill a planned parade for Sept. 25th.
Award now denied, is given to civilian who exemplifies the academy’s ideals…

The limit of repetition thresholds of rich sequences
Lubom\'ira Dvo\v{r}\'akov\'a, Edita Pelantov\'a
https://arxiv.org/abs/2509.06104 https://

The limit of repetition thresholds of rich sequences
The repetition threshold of a class of sequences is the smallest number $r$ such that a sequence from the class contains no repetition with exponent $> r$. We focus on the class $\mathcal{C}_d$ of $d$-ary sequences rich in palindromes. In 2020, Currie, Mol, and Rampersad determined the repetition threshold for $\mathcal{C}_2$. In 2024, Currie, Mol and Peltomäki found the repetition threshold for $\mathcal{C}_3$ and conjectured that the repetition threshold for $\mathcal{C}_d$ tends to 2 with $…

Non self-similar metabelian groups
Dessislava Hristova Kochloukova, Melissa de Sousa Luiz
https://arxiv.org/abs/2509.05798 https://arxiv.org/pdf/2509.05798…

Non self-similar metabelian groups
We show some sufficient conditions for a finitely presented group $G = A \rtimes Q$, with $A$ and $Q$ abelian and the Krull dimension of $A$ equals to $2$ to be not self-similar. This is in contrast to the case of the Krull dimension of $A$ equals to $1$ considered by Kochloukova and Sidki in 2020.